Prince Hilarion of the Isle of Adamant is a man from the Isle of Adamant in Xanth. His talent is banishing specific memories from himself and others. He was first introduced in Knot Gneiss as a major character.
Hilarion was delivered in 1067. He is the husband of Ida and father of Ione, Hilda, and Ion. He is 50 years old.
Hilarion looked for his lost bethrothee for 20 years.
Novels: Knot Gneiss, Esrever Doom, Ghost Writer in the Sky